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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/444NQLGS4ZEV2SE3WZKZ47J5BSK6UB3V/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "444NQLGS4ZEV2SE3WZKZ47J5BSK6UB3V",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/AFAOPMODN43LECA444FC27HNCFYEFNQN/?format=api",
    "sender": {
        "address": "dguimon1 (a) san.rr.com",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "Dave Guimont",
    "subject": "[amsat-bb] Re: Quadrifilar Helices",
    "date": "2007-11-02T17:33:09Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/CLZQSBULSMQXVQAYSA5NWHWP6IIKKVTU/?format=api",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/T7JTOD4KELMVLC36A7UXZMR3RCSNES46/?format=api"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "\n>The Satellite Experimenters Handbook by Martin Davidoff K2UBC (1990 Pages\n>8-15 & 16) and it's successor The Radio Amateur's Satellite Handbook (1998\n>pages 10-13 to 10-15) both have details of this antenna, its use and its\n>construction.\n>I recommend this book to all satellite experimenters and users, it may be\n>nearly 10 years old but the principles and information contained therein\n>have not changed.\n>\n>Robin Haighton VE3FRH\n>Immediate Past President AMSAT\n>\n\nThat's exactly where I started, Robin, on page 6-20 of the original edition.\nBut Maxwell's measurement produced a horrible \nVSWR.....I saw Marty later on at a convention, \nand I believe he said the same thing happened to him...\n\nIt took me 4 iterations to get the antenna flat \nwith no matching device...I of course did it at \n435.  But those dimensions translated very \nsuccessfully to 2M satellite, 2M repeaters, and \nbelieve it or not to 2.4 gigs....In front of a dish, of course!!!\n\nI had seen other pictures of the antenna, and was \nvery interested prior to Marty's excellent \ndepiction of the construction details...\n\nI used a combination of 435 and 2M versions fixed \nat about 45°, and rotated in AZ only and worked \nvery well with strong signal birds...\n\nQuadfilxxxxxxxxx has the dimensions for the 3, \nbut the 2.4 gig computation is left as an exercise for those interested.\n\nhttp://home.san.rr.com/doguimont/uploads/\n\nNice to hear from you, Robin....R U active on any of the birds??\n\n\n\n\n            73, Dave [email protected]\n                    Disagree: I learn....\n\n               Pulling for P3E... \n\n\n",
    "attachments": []
}